Our software is meant to be used in shaded viewports. Be sure to
try out our tools with Shademode set to something other than Wireframe
(use the "shademode" command to do this).

If you purchased AutoCAD 2000 or Architectural Desktop 2.0, you will need
to download
and install a more recent version of the AutoCAD 2000 3D graphics system (acgs.dll).

NOTE: You should download
this update regardless of whether or not you plan to use 3DLighting.
This update contains significant bug fixes and performance enhancements.
Users of Mechanical Desktop and more recent versions of AutoCAD and
Architectural Desktop do not need this update to use 3DLighting.